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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 994 · 40 questions
TalentJR

How to do it in your head (Count up): Start at the smaller number. Jump to the next ten, then the next hundred, then to the bigger number. Add up all the jumps.

NameDateTime takenScore ___ / 40
  1. 1.1004 − 995 =
  2. 2.328 − 290 =
  3. 3.1008 − 985 =
  4. 4.97 − 68 =
  5. 5.74 − 28 =
  6. 6.80 − 33 =
  7. 7.1010 − 992 =
  8. 8.104 − 92 =
  9. 9.1007 − 978 =
  10. 10.103 − 77 =
  11. 11.319 − 287 =
  12. 12.519 − 495 =
  13. 13.1020 − 976 =
  14. 14.309 − 295 =
  15. 15.514 − 484 =
  16. 16.60 − 39 =
  17. 17.109 − 92 =
  18. 18.1023 − 996 =
  19. 19.88 − 72 =
  20. 20.108 − 73 =
  21. 21.70 − 38 =
  22. 22.1016 − 988 =
  23. 23.1026 − 993 =
  24. 24.110 − 73 =
  25. 25.101 − 87 =
  26. 26.213 − 179 =
  27. 27.99 − 60 =
  28. 28.519 − 494 =
  29. 29.509 − 485 =
  30. 30.514 − 487 =
  31. 31.1009 − 988 =
  32. 32.67 − 30 =
  33. 33.1022 − 986 =
  34. 34.94 − 72 =
  35. 35.226 − 189 =
  36. 36.61 − 43 =
  37. 37.77 − 40 =
  38. 38.1004 − 992 =
  39. 39.129 − 86 =
  40. 40.526 − 498 =

Answer key

  1. 9
  2. 38
  3. 23
  4. 29
  5. 46
  6. 47
  7. 18
  8. 12
  9. 29
  10. 26
  11. 32
  12. 24
  13. 44
  14. 14
  15. 30
  16. 21
  17. 17
  18. 27
  19. 16
  20. 35
  21. 32
  22. 28
  23. 33
  24. 37
  25. 14
  26. 34
  27. 39
  28. 25
  29. 24
  30. 27
  31. 21
  32. 37
  33. 36
  34. 22
  35. 37
  36. 18
  37. 37
  38. 12
  39. 43
  40. 28

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